Document and Entity Information (USD $)	12 Months Ended
	Apr. 01, 2012	May 14, 2012	Sep. 25, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	TESSCO TECHNOLOGIES INC
Entity Central Index Key	0000927355
Current Fiscal Year End Date	--04-01
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 70,661,400
Entity Common Stock, Shares Outstanding		8,023,471
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Apr. 01, 2012